Shuttle checking mechanism



Aug. 29, 1933. A. A. GORDON 1,924,137

SHUTTLE CHECKING MECHANISM Filed Dec. so; 1951 2 Sheets-Sheet 1 A. A. GORDON 1,924,187

SHUTTLE CHECKING MECHANISM Filed Dec. 30, 1931' 2 Sheets-Sheet 2 Aug. 29, 1933.

/7L5E7? T A. 60/270 PatentedAug. 29, 1933 p 1,924,1sid SHUTTLE CHECKING MECHANISM Albert A., Gordon, Worcester, Mass., assignor to -Crompton & Knowles Loom Works, Worcester,

. Mass, a Corporation of Massachusetts Application December 30,1931 I I v SerialNo. 583,932. Y

'9 ,Claims. (01. is9' '1s7 This invention relates to mechanism for checking the flight of a shuttle in a fly shuttle loom.

It is the object of my inventionto provide mechanism effective tostop the shuttle in a predetermined position in the shuttle box, and pref erably: without engagement of the picker.

A further object of the invention is to provide means by which increased pressure may be applied to the shuttle as it closely approaches final boxed position, together with means by which such increased pressure will be relieved before the shuttle is picked from the shuttle box.

My invention further relates to arrangements and combinations of parts which will be hereinafter described and more particularly pointed out in the appended claims. Y

A preferred form of the. invention is shown in the drawings, in which t Fig. 1 is'an end elevation of a loom'having my invention applied thereto;

Fig. 2 is an enlarged front elevation of the lay end and parts associated therewith;

Fig. 3 is a detail plan view, looking in thedi- 7 posed between a collar 55, adjustable on the,

rection of the arrow 3 in Fig. 2;

Fig. 4 is a detail front elevation, looking in the direction of the arrow 4 in Fig. 1, and

Fig. 5 is a detail sectional planview, taken along the linev 55 in Fig. l.' I Referring to the drawings, I have shown certain parts of a drop box loom including a loom side and-a lay 11, supported on theusual swords 12 and swinging on a rock shaft 13; A lay end 15 is mounted on the end of the lay 11 and. is provided with guideways for a set of shifting shuttle boxes 17, one such guideway being shown at 18in Fig. '3. The shuttle boxes are mounted on a lifter rod 19 and are shifted vertically by'pattern controlled mechanism of the usual type.

Each shuttle box is provided with a binder 20, pivoted at 21 near the left hand end of the drop boxes 1'7 as viewed in Fig. 2. Binder springs 22 are provided for the binders 20, said springs being secured by screws 23 (Fig. 3)

to the front of the drop boxes 17.

A picker P is slidablelengthwise of the lay on a guide-rod 25 and is mounted to engage the shuttles which is actively positioned opposite the picker. A picker stick is provided for actuating the picker P.

The parts thus far described are of the usual construction and in themselves form no part of my present invention, which relates particularly to the provision of a checking. member :30, mov'-" able as will be described into. the pathof the in-coming active shuttle S. i

'The checking member is loosely pivoted at 31 on a projection 32 ofapositioning arm' 33', the'upper 'end'of which is pivoted at 34 on a bracket 35 extending; outward from. the my end 15. The lower end of thearm 33 is connected by a link 37 to abellcrank 38 which is pivoted at 39 on a bracket 40 secured to the under side of the lay 11. e

A'link 42 is connected at its upper endthrough a swivel member 43 to the horizontal arm of the bell crank 38 and is connected at its; lower end to the-front end of a cam lever 44, pivoted on a bracket 45secured to the 100m side 10.

A cam roll 46 at therear end of the lever 44 is engaged by a cam 48 mounted onthe bottom or cam shaft 50 of the loom, said shaft making one revolution to each two beatsof the lay. The

cam 48 has raised portions 51 and depressed portions 52, both preferably concentric with the. shaft 50. A spring 53 acts to hold the cam roll 46 against the surface of the cam 48.

A relatively heavy spring 54 (Fig. 2) is interlink 37, and a bracketor guide 56-mountedon the lay end 15. A stop screw 5'7 is threaded and adjustable in the arm -33"and engages.;the outer face of-the lay end 15, thus limiting the swingumm STATES I? ing movement of the arm under the influence of the spring 54.

A flat'spring 60 (Figs. 2 and 3) engages the inner face of the member 30 andyieldinglyvre sists swinging movement thereof into the path 'of the shuttlen The free end of the member ,30

is shaped to fit the tapered end of the shuttle 'S, and is preferably provided with a covering movement of the parts to operative position and also to quicken the release of pressure, as will" be hereinafter described.

After the shuttle hasgbeen picked and the boxes havebeen shifted, the roll 46 drops into a depressed portion 52 of the cam48 and the springs 53 and 54 cooperate to move the checking member 30 to the operative position indicated in Fig. 3, in which position the spring 60 maintains the. member. 30 in yielding, contact with the projection 64 of the binder 20.

I As the shuttle Sapproach'es final boxed position, the tapered end of the shuttle engages the inclined inner end of the member 30', attempting ,to force the member 30 outward; Such attempted. outward =mo'vement causes the, member 30. .to press 'firmly" against the projection '64, thus causing the binder to more firmly --engagethe shuttle Sand to effectively prevent rebound thereof.

At the same time,- the inclined faceofthe member prevents movementfof: the- 5 shuttle beyond a predetermined point, which point is preferably such' that the-Eshuttle does not engage the picker 3, as indicated in Fig. 3'.;.'- As soon as the shuttle is thus brought to rest,

a raised portion 51 of the'cam 4a'en'gagespthe 4. In a loom having a lay, a shuttle, a shuttle box and a binder, in combination, a checking member mounted for movement longitudinally of the shuttle box toward the incoming shuttle, means to move said member to operative position just prior to theboxing of the shuttle, and

means to mwithdraw saidzfmember. after the shuttle isboxecl; said member when in advanced position-engaging the binder and being effective to apply increased force to the binder as the shuttle is boxed.

, In a loom having a lay, a shuttle, a picker, a shuttle: box and a binder, in combination, a

checking member, additional to said picker and mounted for movement longitudinally of the shuttle box-toward the incoming shuttle, means to movesaid member to operative position just roll 46 and positively withdraws the member v30 out of engagement with the shuttles-rand, also...

the drop-:boxes; and from all parts associatedout of engagement with the projection 64 of the bindernZOsr. ThexmemberBu-is thus freed from therewith and the boxes; may thereafterbe free- In -shifted as :usuahand the shuttle/may be pickediunderreduced binder pressura Shouldtheamember 30 remain in partialcontact with theshuttleS or with the projection 64, guidesmm (Fi'gQ2); on the la-yend 15 will preventsanyi substantial vertical movement of the member: 30

Having thus described my invention andthe advantagesathereof; I doflnot wish to be limited torthead'etailsnherein :disclosed, otherwise than as set iorthinth'e-claims,v but what I claim is:-

1.;In a1loom having a'lay, a shuttle, a shuttle box and zaibinder, in combination, a checking member mounted for movement longitudinally of=thez shuttle box toward the incoming shuttle and effective. in. advancedposition to apply increased force to the; binder asthe shuttlereachesrfinalhboxed position, and. means. to aclvancewsaidmember before the shuttle is. boxed.

2. iInaaloom havingalay, ashuttle, a picker, a shuttle box:,and-.a'binder, in combination, a

checking 'member additional to said picker and ,mountedufor: movement longitudinally of the shuttleuboxrtoward, the incoming shuttle; means to 1 move. said member; to operative position just prior toxeachrboxingzof: the shuttle, and means towwithdrawflsaidmember after each boxing of the shuttle;- V 1 p 3. In a loom having a lay, a shuttle-,;a picker, 'a= shuttles-box] and abi-ndenin combination, a checking member additional to said picker and 'mounted for, movement longitudinally of vthe "shuttles. box ;toward: ,theincoming shuttle, yieldingnimeans to ,move" said .member to -'operative position justzpriorto, each boxing of the shuttle,

priorto each boxing of the shuttle, and means to withdraw said member after each boxing of the shuttle; said binder having a portion projecting beyond its pivot and engaged, by said member, as the. shuttle presses said memberoutward.

6. .In a drop,box loom having a picker, shiftingshiittlebbxes, a plurality of shuttles"'and a shuttle binder for each box, in'combina'tion a checking member additional to' said pickenand mounted in permanent alignment with the active shuttle box and movable longitudinally'of the shuttle box-toward an incoming shuttle, and means to move saidmember forward'to'operative position, said member whenin forward-op v erative position engaging an outwardly projecting portion of said binder.

7. In a dropboxloom having a picker, shifting shuttle boxes, a plurality of shuttles and a shuttle. binder for each box, in combination; a checking member additional to said picker and mounted inalignmentiwith the active shuttle box and movable longitudinally of the shuttle thereby releasing the increased;'binder'pressure after eachshuttle is boxed.

9., The. combination in a ,loom'as-set forth in claim '7, in which acontinuously rotated cam permits yielding advance of-said checking-member. prior toreach boxing of: a-shuttle and-effects 'and.- positiveumeans. to withdrawsaid member 1 after eachaboxin'g ofthea shuttle.

periodical and positive withdrawa'lthereof after 'each'boxing thereof of a shuttle. V

ALBERT. "A. GORDON. 

